φ25mm实心柱塞抽油泵结构改进

摘要

为了满足日产液约为2 m3油井的生产需求，长庆油田于2011年创新研制了25 mm实心柱塞抽油泵，并进行了生产试验。通过现场跟踪分析，存在阀组堵死、双通流道螺纹漏失、泄油器打开等问题。改进了泵的结构，即：将固定阀体与阀罩设计为一个整体，增大过流面积；改变现有扶正体的形状，防止沉积堵塞出油通道；双通接头进液孔采用月牙形状，增大过流面积；配套了新型滑套泄油器，避免泄油及卡钻。现场试验表明：改进后的25 mm 实心柱塞抽有效延长了检泵周期，并满足了低产井生产需求。%In order to satisfy the daily fluid production rate about 2 m3 ,Changqing oil field devel-oped the25 mm solid plunger pump in 2011 and progressed field experiment.The faults which were found in onsite investigation existed,that the valve block was locked up,the screw thread of two-channel was leakage,and drainage was opened and so on by the tracking analysis.The struc-ture was improved,that is making the entirety of filling valve and valve housing,increasing the open area,changing the shape of the wiper block in order to prevent blocking up the channel,a-dapting the shape of double passage swivel joint which crescent moon for increasing the open are-a,and mating the new sliding sleeve drainage device in order to avoid oil drainage and drill pipe sticking.Field test shows that the improved25 mm solid plunger pump is prolonged the pump inspection cycle effectively,satisfying the requirement of stripped wells.